HeaderValues: Handle all parameters without values.

sdk/lib/io/http_headers.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of dart.io;
 
 class _HttpHeaders implements HttpHeaders {
   final Map<String, List<String>> _headers;
   final String protocolVersion;
 
@@ skipping 695 matching lines @@
     void parseParameters() {
       var parameters = new HashMap<String, String>();
       _parameters = new UnmodifiableMapView(parameters);
 
       String parseParameterName() {
         int start = index;
         while (!done()) {
           if (s[index] == " " ||
               s[index] == "\t" ||
               s[index] == "=" ||
+              s[index] == parameterSeparator ||
               s[index] == valueSeparator) break;
           index++;
         }
         return s.substring(start, index).toLowerCase();
       }
 
       String parseParameterValue() {
         if (!done() && s[index] == "\"") {
           // Parse quoted value.
           StringBuffer sb = new StringBuffer();
@@ skipping 263 matching lines @@
             (codeUnit >= 0x23 && codeUnit <= 0x2B) ||
             (codeUnit >= 0x2D && codeUnit <= 0x3A) ||
             (codeUnit >= 0x3C && codeUnit <= 0x5B) ||
             (codeUnit >= 0x5D && codeUnit <= 0x7E))) {
         throw new FormatException(
             "Invalid character in cookie value, code unit: '$codeUnit'");
       }
     }
   }
 }